US2015102256A1PendingUtilityA1

Cathode active material for lithium-ion secondary battery

45
Assignee: KONISHI HIROAKIPriority: May 31, 2012Filed: May 31, 2012Published: Apr 16, 2015
Est. expiryMay 31, 2032(~5.9 yrs left)· nominal 20-yr term from priority
Inventors:Hiroaki KonishiAkira GunjiXiaoliang Feng
H01M 4/525H01M 4/505Y02E60/10
45
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

A cathode active material is provided which is capable of improving charge/discharged potential and increasing energy density. The cathode active material is for a lithium-ion secondary battery and is represented by the composition formula: xLi 2 MnO 3 -(1−x)LiNi a Mn b O 2 . In the composition formula, x, a, and b are numerals satisfying the following relationships: 0.2<x<0.8, 0.5<a<1, 0<b<0.5, and a+b=1.

Claims

exact text as granted — not AI-modified
1 . A cathode active material for a lithium-ion secondary battery, wherein said cathode active material is represented by the composition formula:
     x Li 2 MnO 3 -(1 −x )LiNi a Mn b O 2 ,   wherein x, a, and b are numerals satisfying the following relationships:   0.2<x<0.8,   0.5<a<1,   0<b<0.5, and   a+b=1.   
     
     
         2 . The cathode active material for a lithium-ion secondary battery according to  claim 1 , wherein x, a, and b are the numerals satisfying the following relationships:
 0.4≦x≦0.6,   0.525≦a≦0.75,   0.25≦b≦0.475, and   a+b=1.   
     
     
         3 . The cathode active material for a lithium-ion secondary battery according to  claim 1 , wherein x, a, and b are the numerals satisfying the following relationships:
 0.4≦x≦0.6,   0.525≦a≦0.7,   0.3≦b≦0.475, and   a+b=1.   
     
     
         4 . The cathode active material for a lithium-ion secondary battery according to  claim 1 , wherein x, a, and b are the numerals satisfying the following relationships:
 0.45≦x≦0.55,   0.525≦a≦0.7,   0.3≦b≦0.475, and   a+b=1.   
     
     
         5 . The cathode active material for a lithium-ion secondary battery according to  claim 1 , wherein x, a, and b are the numerals satisfying the following relationships:
 0.45≦x≦0.55,   0.6≦a≦0.65,   0.35≦b≦0.4, and   a+b=1.   
     
     
         6 . The lithium-ion secondary battery including a cathode active material for a lithium-ion secondary battery according to  claim 1 .

Join the waitlist — get patent alerts

Track US2015102256A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.